/* MarkVault Creative — The Brand Archive */
:root {
  --obsidian: #0B0A0C;
  --umber: #1E1712;
  --parchment: #EFE6D6;
  --brass: #C79A3E;
  --ash: #A39E94;
  --ash-muted: #8B857A;
  --text-on-dark: #E8E2D6;
  --text-on-dark-muted: #C5BFB5;
  --text-on-light-muted: rgba(11, 10, 12, 0.72);
  --font-serif: 'Fraunces', Georgia, serif;
  --font-body: 'Manrope', system-ui, sans-serif;
  --font-mono: 'Azeret Mono', monospace;
  --header-h: 4.5rem;
  --radius: 4px;
  --transition: 0.3s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  background: var(--obsidian);
  color: var(--text-on-dark);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--brass); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--parchment); }

h1, h2, h3, h4 { font-family: var(--font-serif); font-weight: 500; line-height: 1.2; }
h1 { font-size: clamp(2.25rem, 5vw, 3.75rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); margin-bottom: 1rem; }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); margin-bottom: 0.75rem; }

.archive-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--brass);
  text-transform: uppercase;
}

.surface-obsidian { background: var(--obsidian); color: var(--text-on-dark); }
.surface-umber { background: var(--umber); color: var(--text-on-dark); }
.surface-parchment { background: var(--parchment); color: var(--obsidian); }
.surface-brass { background: var(--brass); color: var(--obsidian); }

.container { width: min(1140px, 92vw); margin: 0 auto; }
.section { padding: 5rem 0; }
.section-sm { padding: 3rem 0; }

.text-ash { color: var(--text-on-dark-muted); }
.text-brass { color: var(--brass); }

.surface-parchment { background: var(--parchment); color: var(--obsidian); }
.surface-parchment .text-ash,
.surface-parchment .page-hero-lead,
.surface-parchment .archive-statement p,
.surface-parchment .cta-band p { color: var(--text-on-light-muted); }

/* Header */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(11, 10, 12, 0.92);
  color: var(--text-on-dark);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: background var(--transition), box-shadow var(--transition), color var(--transition);
}
.site-header.scrolled {
  background: var(--parchment);
  color: var(--obsidian);
  box-shadow: 0 1px 0 rgba(11,10,12,0.08);
}
.site-header.scrolled a { color: var(--obsidian); }
.site-header.scrolled a:hover { color: var(--brass); }
.site-header.scrolled .logo-mark { color: var(--brass); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1140px, 92vw);
  margin: 0 auto;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 500;
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  color: inherit;
}
.logo-mark { color: var(--brass); }

.nav-main { display: flex; gap: 1.75rem; list-style: none; }
.nav-main a {
  font-size: 0.875rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: inherit;
  opacity: 0.92;
}
.nav-main a:hover { opacity: 1; color: var(--brass); }
.site-header.scrolled .nav-main a:hover { color: var(--brass); }
.nav-cta {
  font-size: 0.8125rem;
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--brass);
  color: var(--brass);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: background var(--transition), color var(--transition);
}
.nav-cta:hover { background: var(--brass); color: var(--obsidian); }
.site-header.scrolled .nav-cta { border-color: var(--obsidian); color: var(--obsidian); }
.site-header.scrolled .nav-cta:hover { background: var(--obsidian); color: var(--parchment); }

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  margin: 5px 0;
  transition: var(--transition);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), transform 0.15s;
}
.btn-brass { background: var(--brass); color: var(--obsidian); }
.btn-brass:hover { background: #b08832; color: var(--obsidian); }
.btn-outline {
  background: transparent;
  border: 1px solid var(--brass);
  color: var(--brass);
}
.btn-outline:hover { background: var(--brass); color: var(--obsidian); }
.surface-parchment .btn-outline { border-color: var(--obsidian); color: var(--obsidian); }
.surface-parchment .btn-outline:hover { background: var(--obsidian); color: var(--parchment); }

/* Hero — THE DRAWER */
.hero-drawer {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding-top: var(--header-h);
}
.drawer-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid rgba(199,154,62,0.25);
  padding: 0 min(4vw, 2rem);
  background: var(--umber);
}
.drawer-tab {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.75rem 1.5rem;
  background: transparent;
  border: none;
  color: var(--text-on-dark-muted);
  cursor: pointer;
  position: relative;
  transition: color var(--transition);
}
.drawer-tab.active { color: var(--brass); }
.drawer-tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 2px;
  background: var(--brass);
}
.drawer-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 60vh;
}
.drawer-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 3rem min(4vw, 3rem);
  background: var(--obsidian);
}
.drawer-copy .slogan {
  font-size: 1.125rem;
  color: var(--text-on-dark-muted);
  max-width: 32rem;
  margin: 1.5rem 0 2rem;
  line-height: 1.7;
}
.drawer-cta { display: flex; gap: 1rem; flex-wrap: wrap; }
.drawer-photo {
  position: relative;
  overflow: hidden;
}
.drawer-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.drawer-photo::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11,10,12,0.4) 0%, transparent 60%);
}
.drawer-footer-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem min(4vw, 3rem);
  background: var(--umber);
  border-top: 1px solid rgba(199,154,62,0.15);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--text-on-dark-muted);
}

/* Archive statement */
.archive-statement {
  text-align: center;
  max-width: 42rem;
  margin: 0 auto;
}
.archive-statement p {
  font-size: 1.125rem;
  color: var(--text-on-dark-muted);
  margin-top: 1rem;
}

/* Tabbed drawers section */
.drawer-panels { margin-top: 2rem; }
.drawer-panel-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid rgba(199,154,62,0.2);
  margin-bottom: 2rem;
}
.drawer-panel-tab {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 1rem 2rem;
  background: transparent;
  border: none;
  color: var(--text-on-dark-muted);
  cursor: pointer;
  transition: color var(--transition);
}
.drawer-panel-tab.active { color: var(--brass); border-bottom: 2px solid var(--brass); margin-bottom: -1px; }
.drawer-panel { display: none; }
.drawer-panel.active { display: block; }
.drawer-panel-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.drawer-panel-grid img { border-radius: var(--radius); }

/* Work teaser */
.work-teaser-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}
.work-card {
  background: var(--umber);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition);
}
.work-card:hover { transform: translateY(-4px); }
.work-card img { aspect-ratio: 4/3; object-fit: cover; width: 100%; }
.work-card-body { padding: 1.25rem; }
.work-card-body .archive-num { margin-bottom: 0.5rem; }

/* Ledger principles */
.ledger-list { list-style: none; margin-top: 2rem; }
.ledger-item {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 1.5rem;
  padding: 1.75rem 0;
  border-bottom: 1px solid rgba(139,133,122,0.2);
}
.ledger-item .ledger-num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--brass);
  line-height: 1;
}

/* Archive rail */
.archive-rail {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 0;
}
.rail-index {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  color: var(--brass);
  text-align: center;
  padding: 1rem 0;
  border-right: 1px solid rgba(199,154,62,0.2);
}
.rail-items { display: flex; flex-direction: column; }
.rail-item {
  display: grid;
  grid-template-columns: 5rem 1fr;
  gap: 1.5rem;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid rgba(139,133,122,0.15);
  transition: background var(--transition);
}
.rail-item:hover { background: rgba(30,23,18,0.5); }
.rail-item-id {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--brass);
}

/* Neighbourhood strip */
.neighbourhood {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.neighbourhood img { border-radius: var(--radius); }

/* Mini FAQ */
.mini-faq details {
  border-bottom: 1px solid rgba(139,133,122,0.2);
  padding: 1.25rem 0;
}
.mini-faq summary {
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.mini-faq summary::after { content: '+'; color: var(--brass); font-size: 1.25rem; }
.mini-faq details[open] summary::after { content: '−'; }
.mini-faq p { margin-top: 0.75rem; color: var(--text-on-dark-muted); padding-right: 2rem; }

/* Page hero (inner pages) */
.page-hero {
  padding: calc(var(--header-h) + 4rem) 0 4rem;
  background: var(--umber);
}
.page-hero h1 { margin-bottom: 0.75rem; }
.page-hero-lead { font-size: 1.125rem; color: var(--text-on-dark-muted); max-width: 36rem; }

/* Services grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}
.service-card {
  background: var(--umber);
  padding: 2rem;
  border-radius: var(--radius);
  border-left: 3px solid var(--brass);
}
.service-card .archive-num { margin-bottom: 0.75rem; }

/* Work grid */
.work-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}
.work-item { background: var(--umber); border-radius: var(--radius); overflow: hidden; }
.work-item img { aspect-ratio: 16/10; object-fit: cover; width: 100%; }
.work-item-body { padding: 1.5rem; }

/* About layout */
.about-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}
.about-split img { border-radius: var(--radius); }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
}
.contact-details { list-style: none; }
.contact-details li { padding: 0.75rem 0; border-bottom: 1px solid rgba(139,133,122,0.15); }
.contact-details strong { display: block; font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--brass); margin-bottom: 0.25rem; }

/* Forms */
.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-on-dark-muted);
  margin-bottom: 0.4rem;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--obsidian);
  border: 1px solid rgba(139,133,122,0.3);
  color: var(--parchment);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  border-radius: var(--radius);
  transition: border-color var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--brass);
}
.form-group textarea { min-height: 140px; resize: vertical; }
.form-check {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.8125rem;
  color: var(--text-on-dark-muted);
  margin-bottom: 1.25rem;
}
.form-check input { margin-top: 0.25rem; accent-color: var(--brass); }
.form-check a { color: var(--brass); }

/* FAQ page */
.faq-list details {
  border-bottom: 1px solid rgba(139,133,122,0.2);
  padding: 1.5rem 0;
}
.faq-list summary {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  cursor: pointer;
  list-style: none;
}
.faq-list summary::marker { display: none; }
.faq-list p { margin-top: 0.75rem; color: var(--text-on-dark-muted); }

/* Legal pages */
.legal-content h2 { margin-top: 2.5rem; font-size: 1.375rem; }
.legal-content h3 { margin-top: 1.5rem; font-size: 1.125rem; }
.legal-content p, .legal-content li { color: var(--text-on-dark-muted); margin-bottom: 0.75rem; }
.legal-content ul, .legal-content ol { padding-left: 1.5rem; margin-bottom: 1rem; }

/* 404 */
.error-page {
  min-height: 80vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--header-h) 1rem 4rem;
}
.error-page .archive-num { margin-bottom: 1rem; }

/* Footer */
.site-footer {
  padding: 4rem 0 2rem;
  border-top: 1px solid rgba(139,133,122,0.15);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}
.footer-brand p { color: var(--text-on-dark-muted); font-size: 0.875rem; margin-top: 0.75rem; max-width: 22rem; }
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brass);
  margin-bottom: 1rem;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 0.5rem; }
.footer-col a { color: var(--text-on-dark-muted); font-size: 0.875rem; }
.footer-col a:hover { color: var(--parchment); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(139,133,122,0.1);
  font-size: 0.8125rem;
  color: var(--text-on-dark-muted);
}
.footer-disclaimer {
  font-size: 0.75rem;
  color: var(--text-on-dark-muted);
  max-width: 36rem;
  margin-top: 1.5rem;
  line-height: 1.5;
  font-style: italic;
}

/* Cookie banner */
.cookie-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 2000;
  background: var(--umber);
  border-top: 1px solid rgba(199,154,62,0.2);
  padding: 1.25rem;
  transform: translateY(100%);
  transition: transform var(--transition);
}
.cookie-banner.visible { transform: translateY(0); }
.cookie-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  width: min(1140px, 92vw);
  margin: 0 auto;
  flex-wrap: wrap;
}
.cookie-inner p { font-size: 0.875rem; color: var(--text-on-dark-muted); flex: 1; min-width: 200px; }
.cookie-inner a { color: var(--brass); }
.cookie-actions { display: flex; gap: 0.75rem; }

/* CTA band */
.cta-band {
  text-align: center;
  padding: 5rem 2rem;
}
.cta-band h2 { margin-bottom: 1rem; }
.cta-band p { color: var(--text-on-dark-muted); max-width: 32rem; margin: 0 auto 2rem; }
.surface-parchment.cta-band p,
.cta-band.surface-parchment p { color: var(--text-on-light-muted); }

/* Two-col content */
.content-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  margin-top: 2rem;
}
.content-two-col.reverse { direction: rtl; }
.content-two-col.reverse > * { direction: ltr; }

/* Responsive */
@media (max-width: 900px) {
  .drawer-body, .drawer-panel-grid, .neighbourhood, .about-split,
  .contact-grid, .content-two-col, .footer-grid { grid-template-columns: 1fr; }
  .work-teaser-grid, .services-grid, .work-grid { grid-template-columns: 1fr; }
  .nav-main { display: none; }
  .nav-main.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-h); left: 0; right: 0;
    background: var(--parchment);
    color: var(--obsidian);
    padding: 1.5rem;
    gap: 1rem;
  }
  .nav-main.open a { color: var(--obsidian); }
  .menu-toggle { display: block; color: inherit; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
}
@media (max-width: 600px) {
  .drawer-tabs { overflow-x: auto; }
  .drawer-cta { flex-direction: column; }
  .drawer-cta .btn { text-align: center; }
  .footer-grid { grid-template-columns: 1fr; }
  .ledger-item { grid-template-columns: 3rem 1fr; }
}